Are they any decent on-disk implementations of Java's Map?

Question

I\'m looking for an on-disk implementation of java.util.Map. Nothing too fancy, just something that I can point at a directory or file and have it store its co

Answer 1

Chronicle Map is a modern and the fastest solution to this problem. It implements ConcurrentMap interface and persists the data to disk (under the hood, it is done by mapping Chronicle Map's memory to a file).